JPH0339247B2 - - Google Patents
Info
- Publication number
- JPH0339247B2 JPH0339247B2 JP57150476A JP15047682A JPH0339247B2 JP H0339247 B2 JPH0339247 B2 JP H0339247B2 JP 57150476 A JP57150476 A JP 57150476A JP 15047682 A JP15047682 A JP 15047682A JP H0339247 B2 JPH0339247 B2 JP H0339247B2
- Authority
- JP
- Japan
- Prior art keywords
- ultrasonic
- frequency
- voltage
- circuit
- flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000010355 oscillation Effects 0.000 claims description 32
- 238000005259 measurement Methods 0.000 claims description 25
- 238000001514 detection method Methods 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 230000001902 propagating effect Effects 0.000 claims description 4
- 239000000284 extract Substances 0.000 claims 1
- 230000000630 rising effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 11
- 230000010354 integration Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000000644 propagated effect Effects 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 240000001592 Amaranthus caudatus Species 0.000 description 1
- 235000009328 Amaranthus caudatus Nutrition 0.000 description 1
- 244000062793 Sorghum vulgare Species 0.000 description 1
- 101100497923 Viola odorata Voc1 gene Proteins 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 235000019713 millet Nutrition 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
- G01F1/667—Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57150476A JPS5946511A (ja) | 1982-08-30 | 1982-08-30 | 超音波流量計 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57150476A JPS5946511A (ja) | 1982-08-30 | 1982-08-30 | 超音波流量計 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5946511A JPS5946511A (ja) | 1984-03-15 |
| JPH0339247B2 true JPH0339247B2 (de) | 1991-06-13 |
Family
ID=15497724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57150476A Granted JPS5946511A (ja) | 1982-08-30 | 1982-08-30 | 超音波流量計 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5946511A (de) |
-
1982
- 1982-08-30 JP JP57150476A patent/JPS5946511A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5946511A (ja) | 1984-03-15 |
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